ml7037 Oki Semiconductor, ml7037 Datasheet - Page 35

• Manufacturer Part Number: ml7037
• Description: Ml7037-003 Dual Echo Canceler & Noise Canceler With Dual Codec For Hands-free
• Manufacturer: Oki Semiconductor

Not for Publication
PIN CONTROL AND CONTROL REGISTERS
Some of functions and states with the ML7037-003 could be determined either by input state of certain pins (their
secondary functions, if the pins are general-purpose input port pins) and/or the control registers. In such cases, the
functions and states are determined by ORed logics between them. Hence, when a function or a state is determined
(called as “State Control”) by the concerned pin input, it is required to be careful with the concerned register
setting; and visa versa.
Table 13 shows such pins and the relevant control registers.
All the values to be set in the relevant control registers are the initial values set on a release of power-down reset by
the PDN pin or the SPDN-bit [CR0-B7].
*1 : A name in (bracket) shows the pin name when the secondary function is assigned.
OKI Semiconductor
Power-down reset
Reset
PCM Coding Format Selection
Micro Control
Selection
Transmit-Side Volume Control
Receive-Side Volume Control
Line-Side Analog Interface Power-Down
Control
Analog Output Selection
Noise Canceller Through Mode Selection
Receive-Side ALC Through Mode Selection
Slope Filter Through Mode Selection
Echo Canceller Mode Selection Register
Acoustic Echo Canceller Enable Control
Function
Interface Enable/Disable
Table 13 Relevant Input Pins And Control Registers
Pin input to make when State Control
is made by the control register
logic ‘1’
logic ‘1’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
(RPAD[3-0]) *1
(TPAD[3-0]) *1
(VFROSEL) *1
(ALCTHR) *1
(SLPTHR) *1
(LINEEN) *1
(NCTHR) *1
(ECSEL) *1
(ECEN) *1
GPIA[3-0]
GPIA[4-7]
PCMSEL
MCUSEL
GPIB1
GPIB2
GPIB3
GPIB4
GPIB5
GPIB6
GPIB7
PDN
RST
Pin
Control register value to set when
State Control is made by the pin
PEDL7037-003-05Zz_Digest
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
logic ‘0’
ML7037-003
OPE_STAT
AVFROSEL
LVFROSEL
TPAD[3-0]
RPAD[3-0]
RALCTHR
PCMSEL
SLPTHR
Register
LINEEN
NCTHR
Control
ECSEL
LECEN
AECEN
SPDN
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RST